Strand Lighting CD80 - Dimmer Problems Common to a Single Ramp Card

7.3 Dimmer Problems Common to a Single Ramp Card
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The dimmer pack must be powered down before removing or insert-
ing Ramp
Cards
A) FOUR OR EIGHT CONSECUTIVE DIMMERS DO NOT
RESPOND TO COMMANDS.
POSSIBLE CAUSE
1) Ramp Card failure.
SOLUTION
Replace Ramp Card and return faulty card to factory for repair.
8) A PAIR OF CONSECUTIVELY NUMBER DIMMERS DO NOT
RESPOND TO CONTROLS.
POSSIBLE CAUSE
1) Ramp Card driver output failure.
SOLUTION
Replace Ramp Card and return faulty card to factory for repair.
C) FOUR OR EIGHT CONSECUTIVELY NUMBERED DIMMERS
DO NOT COME UP TO FULL BRIGHTNESS OR DO NOT
TRACK SYSTEM.
POSSIBLE CAUSE
1) Motherboard phase switch (1 cp/3cp) not in correct position for 3
phase operation.
SOLUTION
Place phase switch in 3cp position.
POSSIBLE CAUSE
2) Ramp Card improperly calibrated.
SOLUTION
Replace Ramp Card and return faulty card to factory for
recalibration.
D) ONE OR MORE LIGHTS COME ON WHEN CONSOLE IS
TURNED OFF OVERNIGHT.
POSSIBLE CAUSE
1) Output driver or sample and hold malfunction.
SOLUTION
Replace Ramp Card and return faulty card to factory for repair.